§ 59-d. Use of lands so acquired. Whenever lands and the structures and waters thereon shall have been so appropriated for the purposes hereinbefore prescribed, the governor shall have the authority to direct the carrying out of such purposes for and on behalf of the people of the state or in co-operation with the government of the United States, and the expense thereof shall be paid from the treasury out of funds appropriated therefor, on the audit and warrant of the comptroller.